Mamiya 645 Super: Focus Fix

Sharing with you my experience with my Mamiya 645 Super. I got it from eBay Japan. But it has a well-know focusing problem where the mirror does not snap back in its proper place, this causes the image on the viewfinder to blurr. It really confused me. I want to share what i went through with that.

And thanks to Allan (Filmstrip Flips), the problem was fixed!